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- February 23, 1995
-
- Weekly Earthquake Report for Southern California
- ------------------------------------------------
- February 16 - 22, 1995
-
- Prepared by: Kate Hutton, Seismological Laboratory
- (kate@bombay.gps.caltech.edu)
- Lucy Jones, U.S. Geological Survey
- California Institute of Technology
-
- For further information, please contact the authors or the Caltech
- Public Relations Office at 818-395-6326. For daily updates, call
- our Earthquake Information Hotline: 818-395-6977.
- --------------------------------
- This week's Report covers the time period from midnight Thursday
- morning, February 16, Pacific Standard Time, to midnight
- Wednesday night, February 22, 1995, Pacific Standard Time. We
- recorded 251 earthquakes of M1.0 or larger during the 7-day period
- covered.
- The largest and most widely felt earthquake this week
- occurred near the Malibu coast on Sunday afternoon, at 1:24 pm.
- It had a magnitude of M4.3 and was followed 90 minutes later by
- a M3.8 aftershock. Both shocks had thrust focal mechanisms.
- Neither, by the way, was a Northridge aftershock; this site is
- about 15 miles southwest of the Northridge aftershock zone.
- Earlier that day, at 7:47 am, there was a Big Bear aftershock
- (of the Landers/Big Bear sequence from June 28, 1992). This quake,
- M3.5, was also felt in its epicentral area.
- Then on Tuesday evening, a M3.1 Landers aftershock was
- felt slightly in the Yucca Valley area.
- The table lists the quakes this week that were M2.0 or
- larger in the central part of the coverage area. Times are local
- times; if you want Greenwich Mean Time, add 7 hrs to the Pacific
- Daylight Time or 8 hrs to the Pacific Standard Time listed.
-
- Table 1
- -------
- Date Time N Lat. W Long. Mag
- -------------------------------------------------------------
- 2/16 2:24 pm 33 56.6 116 58.2 2.2 1 mi. NNE of Beaumont
- 2/17 2:45 am 33 29.7 118 15.9 2.3 10 mi. NNE of Avalon,
- Catalina Island
- 2/17 5:47 am 33 58.2 117 36.0 2.5 6 mi. NNW of Corona
- 2/17 11:28 am 34 50.0 120 30.9 2.1 9 mi. SSW of Santa Maria
- 2/17 2:37 pm 33 58.6 116 58.6 2.1 3 mi. N of Beaumont
- 2/17 4:30 pm 36 23.1 117 58.8 2.0 7 mi. N of Olancha
- 2/17 5:50 pm 34 9.6 116 25.6 2.2 3 mi. NNE of Yucca Valley
- 2/17 8:43 pm 33 59.1 117 14.9 2.6 6 mi. SSE of the I10/I215
- interchange
- 2/18 1:02 am 34 16.9 117 31.8 2.3 6 mi. E of Mt. Baldy
- 2/18 11:22 am 34 28.5 116 29.9 2.0 24 mi. N of Yucca Valley
- 2/18 8:17 pm 34 15.1 118 25.0 2.1 2 mi. SSE of San Fernando
- 2/18 8:33 pm 34 20.0 116 28.2 2.0 14 mi. N of Yucca Valley
- 2/18 11:28 pm 33 58.9 116 20.4 2.5 9 mi. E of Desert Hot
- Springs
- 2/19 7:47 am 34 19.3 116 52.8 3.5 4 mi. NNW of Big Bear City
- FELT
- 2/19 8:43 am 33 59.1 117 14.9 2.2 6 mi. SSE of the I10/I215
- interchange
- 2/19 1:24 pm 34 2.9 118 54.9 4.3 1 mi. ENE of Leo Carrillo
- State Beach; WIDELY FELT
- 2/19 2:01 pm 32 48.6 116 9.0 2.7 10 mi. WNW of Ocotillo
- 2/19 2:21 pm 32 48.4 116 8.8 2.2 "
- 2/19 2:48 pm 35 31.6 118 15.1 2.3 14 mi. ESE of the town of
- Lake Isabella
- 2/19 2:54 pm 34 2.7 118 55.3 3.8 1 mi. E of Leo Carrillo
- State Beach; FELT
- 2/19 3:34 pm 36 7.2 117 50.7 2.0 5 mi. ESE of Haiwee Reservoi
- 2/19 4:42 pm 34 17.3 118 23.3 2.1 2 mi. E of San Fernando
- 2/19 4:51 pm 34 37.3 116 40.1 2.0 20 mi. NE of Lucerne Valley
- 2/19 5:42 pm 34 2.5 118 54.7 2.0 1 mi. E of Leo Carrillo
- State Beach
- 2/20 12:14 am 33 29.4 116 24.5 2.0 16 mi. S of Palm Desert
- 2/20 12:45 am 34 2.7 118 55.5 2.1 1 mi. ENE of Leo Carrillo
- State Beach
- 2/20 1:28 am 36 4.1 117 51.2 2.2 5 mi. ENE of Coso Junction
- 2/20 2:57 am 34 7.4 116 24.0 2.0 2 mi. E of Yucca Valley
- 2/20 3:55 am 36 4.1 117 51.3 2.3 5 mi. ENE of Coso Junction
- 2/20 8:20 am 33 17.8 116 10.0 2.0 10 mi. N of Ocotillo Wells
- 2/20 10:58 am 34 11.3 118 33.4 2.3 2 mi. ESE of Canoga Park
- 2/20 11:10 am 34 22.6 116 27.7 2.1 17 mi. N of Yucca Valley
- 2/20 2:33 pm 34 27.2 119 19.8 2.1 4 mi. W of Ojai
- 2/20 8:12 pm 32 50.0 115 38.0 2.5 5 mi. WNW of El Centro
- 2/20 8:13 pm 32 49.9 115 37.9 2.2 "
- 2/21 12:28 am 34 12.6 116 50.0 2.3 3 mi. SSE of Big Bear City
- 2/21 1:43 am 34 15.7 119 29.3 2.1 9 mi. S of Carpinteria
- 2/21 7:04 am 36 4.0 117 51.3 2.6 5 mi. ENE of Coso Junction
- 2/21 12:26 pm 34 1.0 116 19.0 2.1 10 mi. SE of Yucca Valley
- 2/21 1:14 pm 32 6.3 116 0.1 2.7 43 mi. S of Ocotillo
- 2/21 4:05 pm 36 4.0 117 51.0 2.1 5 mi. ENE of Coso Junction
- 2/21 8:27 pm 34 8.8 116 25.8 3.1 2 mi. NNE of Yucca Valley
- FELT
- 2/22 9:29 am 36 26.9 117 51.7 2.0 13 mi. NE of Olancha
- 2/22 1:35 pm 36 4.0 117 51.1 2.1 5 mi. ENE of Coso Junction
- 2/22 6:25 pm 36 4.2 117 51.1 2.8 "
- 2/22 6:28 pm 36 4.1 117 51.1 2.6 "
- 2/22 6:29 pm 36 4.4 117 51.0 2.0 "
- 2/22 11:52 pm 35 5.9 119 7.4 2.4 11 mi. WNW of the I5/99
- interchange
- -------------------------------------------------------------